Ballpoint pen



FIG. 1 is a perspective view of a ballpoint pen showing my new design;

FIG. 2 is a front elevation view thereof, the back elevation view being a mirror image of the front elevation view;

FIG. 3 is an enlarged top plan view thereof;

FIG. 4 is an enlarged bottom plan view thereof;

FIG. 5 is a left side elevation view thereof;

FIG. 6 is a right side elevation view thereof;

FIG. 7 is an enlarged cross-sectional view thereof, taken along the line 7-7 in FIG. 2; and,

FIG. 8 is a front elevation view thereof with the writing tip moved to a distal position. 

CLAIM The ornamental design for a ballpoint pen, as shown and described. 